@book{180324,
	author = {Hoffmann, Laurence D., and Bradley, Gerald L.,},
	title = {Calculus :},
	publisher = {McGraw Hill Higher Education,},
	year = {c2004.},
	address = {Boston :},
	edition = {8th ed. /},
	url = {http://www.loc.gov/catdir/enhancements/fy0702/2003051005-d.html}
}